Why do both (all) sides in tactical combat have red range rings?

I like having the range rings for several reasons, like keeping my ships out of a planets range while I am lining them up. And sometimes its the only way to locate the small ships on the map. It starts to get very messy when the ships close in combat. I don't think it be too hard to have 2 different colors. Yellow isn't used for anything I know of in tactical. And having thiner rings would prevent large swaths of red when several ships are close together.